Currently the Azure AD application delegated permissions "Group.Read.All" and "Group.ReadWrite.All" requires admin consent.
Refer: http://graph.microsoft.io/en-us/docs/overview/release_notes
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Group permission scopes
The Microsoft Graph exposes two permission scopes (Group.Read.All and Group.ReadWrite.All) for access to groups APIs. These permission scopes must be consented to by an administrator (which is a change from preview). In the future we plan to add new scopes for groups that can be consented by users.
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In our application we have requirement for these scope permissions with user consent alone. Please let us know any workaround and ETA for this feature.
As of today, all Groups permissions in Microsoft Graph still require administrator consent. However, we're currently working on a feature that will allow applications to request access to one or more specific groups, and end-users will be able to consent in this case. We don't have an ETA yet for this- but we are actively working on it.
The release notes are accurate. We are working on some new user-consentable and hope to have these available shortly. Will post back when these are available.