The graph shown was inspired by this d3.js example. I like the simple solid-color aesthetic of d3 (you have to admit that Lambert + Phong shaders look cheesy), and I wanted to replicate it in three dimensions. Here's my attempt.
I'm planning on adding more features to this project, such as displaying directed graphs, functional node sizing, handles on mouse hovering, clicking and dragging, and whatever else comes to mind. Stay tuned for more!