(BTW, repos with very large numbers of forks, like Rails, aren't able to render a network graph at all.)
Yes, just click on the number of forks. It takes you to:
https://github.com/golang/go/network
Members tab is a simpler enumeration of all forks.
https://github.com/golang/go/network/members
(Similarly, to see the people who have starred a repo, click on that number.)
It's not even hidden in some advanced menu, just point and click.
I know GitHub has at least some considerations because if you press tab, it shows a hidden "Skip to content" button (which I thought was a bug, but learned it's for screen readers). But I can tell the Network tab doesn't look as reader friendly as the Members tab because it uses some non-standard canvas element or so.