This is the best non-interactive graph I've created so far. This graph consistes of all colleges, departments, centers, and institutes.
This is the same graph with labels drawn on.
The biggest problem with adding labels to the graph is the labels are so long (20-30+ characters). I created an interactive version at: http://qa.vivo.ufl.edu/infovis/demo.html
This graph consists of only Colleges and Departments (about ~150 ondes). However, seeing the labels is still difficult in spots. Particularly around the bigger clusters, College of Medicine and College of Liberal arts and Sciecnes.