There is no tool, to my knowledge, that will automatically do this for you. In 11.3 there was a Workflow Designer, but I don’t believe there is any equivalent today.

Automator AI would be similar, but it is really going the opposite direction: from a BPMN diagram it builds out a bot skeleton: 

https://docs.automationanywhere.com/bundle/enterprise-v2019/page/auai-cp-ov.html

There is also Process Discovery, which can produce a flow graph. But this is a pretty weighty tool and license, and takes some time to watch processes being performed on a team before you get decent data. Again, probably not exactly what you’re looking for:

https://docs.automationanywhere.com/bundle/enterprise-v2019/page/flow-graph.html

Personally, for workflows, I use draw.io because it is free and has great features like being able to filter a diagram to show only a successful or failed path, link to different child tasks, save as html with animations, etc. Makes it easy when presenting to business units.

Thks a lot for your info. !!