After bleeding the Power Steering the pump may make a noise because there isn't enough power steering fluid in it.
check the power steering fluid level. I would have to say your low on fluid.
Power Steering?
Power Steering Fluid Or Power Steering Pump
If you mean "what" is making noise when you turn the steering wheel? It usaually means you need power steering fluid. If you run too long without power steering fluid it will make your power steering go out. If it is making a shuttering noise when you take sharp turns. Your rear differential may need to be serviced. I would have is burnished.
ummm power steering
Check the fluid in the power steering. If it is low the car will make noise when you turn the wheel.
It could be low fluid in the power steering pump.
Check your power steering fluid
Power steering belt?
Typically if your power steering fluid is low your car will make noise when you turn the wheel. If this is that case, I suggest taking your vehicle to an auto shop and have them do a power steering fluid check.
There could be a problem in the steering linkage but most likely, the power steering pump is bad or low in fluid
Check your steering pump to see if you need to add more power steering fluid.