I found a similar question for SQL Server Management Studio. But I use latest Azure Data Studio on macOS. We use on-premises SQL Server (not Azure cloud).
How can I use Azure Data Studio to generate an ERD from an existing database?
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Azure Data Studio doesn't have database diagramming built in.
This means you're asking a shopping question, and here's how and where to ask a shopping question.
Actually Azure Data Studio has plenty of extensions that do this. There's a plugin called Schema Visualization that will do it. I'm sure there are others. Also SQL Management Studio offers an ERD export tool that's built-in. If you're on-prem you should be able to connect it.