I've done similar graphs for determining the angles I should mount my
solar panels at. You can do this with a protractor and your paper chart. First, we need to know your latitude? Where are you located? For the sake of example, let's say you live in north Texas at a latitude of 35degrees North.
At the spring and fall equinoxes, the position of the sun will be 35degrees lower than directly overhead, or 90 degrees - 35 degrees = 55 degrees above horizontal at noon.
At the summer solstice, the sun will be 23 degrees higher in the sky, or 90 degrees -35 degrees + 23 degrees = 78 degrees above horizontal at noon.
At the winter solstice, the sun will be 23 degrees lower in the sky, or 90 degrees -35 degrees -23 degrees = 32 degrees above horizontal at noon.
Now you can just draw three lines on your graph that all pass through the center of your structure at GROUND level, one at 78degrees, one at 55degrees, and one at 32degrees. Where they intersect the curved wall of the building will be were the sun will shine at noon. You just substitute your latitude for the one I used in the example to get YOUR values.
Keep in mind that these numbers will be the MAXIMAL heights at noon, and for the remainder of the day the sun will be lower in the sky.
For the azimuth of the sun, assume that at the equinoxes the sun will rise and set due East, and due West respectively. At the summer solstice, the sun will rise 23degrees north of East and set 23degrees north of West. In winter, it will rise 23degrees south of East, and set 23 degrees south of West.
Good luck!