In all levels of MS Project the Network Diagram is configurable. Since you are looking for tracking information look at the Tracking formated box style. Right click in the Network Diagram and select Box styles. In the template area you will find one for Tracking.
Keep in mind the high level project center is at the project level and not the task level so you will not be able to get the task milestone report in the Project Center. However, if you add the column called Milestone to the tables in the project details views, you can then filter for milestone reports.
