We are big proponents of ceramic coating the wheels especially when generating lots of brake dust. Ceramic coat in conjunction with frequent cleanings will go a long way for keeping the wheels looking nice. Taking off the wheels to clean them will be the most effective. If you cannot remove the wheels try and use a microfiber wheel brush that can reach trough the wheel spokes and get the entire wheel barrel.
If you are willing to swap to a low dust pad we like iSWEEP IS1500. You can check out the thread below for more info.