use power automate and ms graph to list guest users of some particular sharepoint sites

Hi All,
I currently have a powershell that can  go through list of sharepoint sites and list guest users from the sites.
I would like to leverage power automate and MS Graph to do this.
Is it possible and if yes what are the steps to take.
For authentication i was thinking using app registration to authenticate in Power Automate.
But what the end point is MS graph to get guest users?