Here is what I did to reverse engineer the data model.
I downloaded an evaluation copy of the ModelRight2 program, and connected it to the MySQL database from CalemEAM.
The ModelRight program was very easy to use to auto layout the tables, I only need to re-arrange about 5 tables to avoid overlaps.
After I got all the tables showing up correctly, I exported the ER diagram into a JPEG file for later printing.
I configured my plotter with landscape mode, and set to a 24x34 page size, printed the JPEG with fit to page size option. The final print out was very readable.
I wish I could post the JPEG file here.