Check out a plugin for Unreal that extends the functionality of the standard graph editor.

Check out a plugin for Unreal that extends the functionality of the standard graph editor, allow you to create and edit node graphs more quickly and with more comfort.

Here is a quick overview of the tool from the developer: 

It is also worth mentioning that the tool supports blueprints, behavior tree graphs and animation blueprints. You can find more details on the script here. 

Get the tool