This dialog,called RscDisplayDebug,is defined inRES\ BIN\Resource.BIN.
You can simply create it in the mission editor,make a trigger Radio Alpha,on activation:
[] exec ""createdialog.sqs"
In createdialog.sqs:
_ok = createDialog "RscDisplayDebug"
Errors occure when U click the buttons,the actions are:
"diag_toggle ""collision"
""all" diag_enable false"
"diag_drawmode ""FireGeometry"
etc