Coincidentally I released an experimental graph animation video using graph-tool for rendering and ffmpeg for conversion: https://www.youtube.com/watch?v=TywrMtBcgeI
The technique works well for engaging data visualization, although the code is somewhat tedious.
Are the ImageMagick commands included in your Python module? I took a look and didn't see a way to create the GIF. (EDIT: found it; it is the gif() function in render.py. I am dumb)