I had to share this awesome script I found on Github.

All credit goes to:

File Name	: vDiagram_2.0.8.ps1
Author		: Tony Gonzalez
Author		: Jason Hopkins
Based on	: vDiagram by Alan Renouf
Version		: 2.0.8

Direct Link –

It took about 20 minutes to audit and diagram 3 ESXi hosts with about 90 VMs. This was completed on an i5 Lenovo laptop with 8GB RAM