Constructing a link to an Office 365 Plan from the Graph API

[Sanguis]

I'm trying to figure out how I can utilize the Microsoft Graph API to construct a link to an Office 365 Plan connected to a specific Office 365 Group. I've been able to link to almost all other resources tied to an Office 365 group by using the groupstatus.apsx page. Has anyone been able to solve this puzzle?

Example of a link to the documents for an Office 365 Group:
https://[tenantName].sharepoint.com/_layouts/groupstatus.aspx?id=[groupId]&target=documents

[#2]

It is in beta now. You can do

GET https://graph.microsoft.com/beta/groups/<id>/plans.

Check out the documentation at http://graph.microsoft.io/en-us/docs/api-reference/beta/api/group_list_plans