That's why I made a simple Chrome extension fisheyeGraph, which opens Commit Graph of required repo in new tab – you need only to insert key word of repo (which you need to specify in Options):
You can read details about it on new page – Chrome Extension fisheyeGraph v1.0 and find source code on GitLab.
In next version I am planning to do autocomplete (it's actually already done, but I can't make work JQuery in extension).
For me this extension saves 30 seconds on each repo opening – some of the pages, that I need to open in order to get to Commit Graphs by hands are heavy – using extension I just skip them.
See new posts:
September 4, 2014 fisheyeGraph v1.1
September 8, 2014 fisheyeGraph v1.2
September 17, 2014 Fisheye Commit Graph Opener v1.3