This is an add-on for Blender 3.5+ that uses the free, open-source Graphviz tool (a.k.a. dot) to automatically arrange nodes in a nice-looking, easy-to-read way: Compared to the built-in Node Arrange ...
Edit -> Preference -> Addon (select on the left side bar) -> Install (on the top) select the .zip file to install, after installation, enable it by checking the checkbox. Go to the viewport, press N ...