How can I place node IDs out of nodes in a biograph?

Nodes in my graph differ in size, so some IDs in small nodes cannot be easy to see. I want to place such IDs out to the circles, e.g. by the right side, but I checked the help introduction of "biograph" , googled about it and discovered no resort.

In fact, what I read on other papers showed the implement, how can I achieve it? Thanks!

Here are 2 graphs below, the left is what I have now and the right the goal.