To create a service dependency diagram, you will need to install two additional dependencies:
Here's a neat trick for AEM developers and architects: you can create an diagram representation of the service dependencies using Composum. For those not familiar, Composum is an Open-Source project based on Apache Sling.
Once you install the dependencies you can access the Composum Service Graph web console at /system/console/servicegraph.
Using the Service Graph Web Console
The Service Graph Web Console has a couple fields, the most important being the Classnames Regex. You can put any regular expression to filter what classes should be including:
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I've also created an issue with the Composum team to include this in their next release.