You can't. TurboTax does not have an image of an imported W-2. Only the data that was imported will be in the worksheets that are part of your pdf. If you want an actual copy of your W-2 you have to obtain and save the copy issued by your employer.
agreeing with @xmasbaby0-
You can view the W2 information in your tax filing by going to the forms mode. Just scroll on he left part of your screen and locate Form W2. This worksheet will list all the information related to your W2.
-follow this link regarding the forms mode in TurboTax-