Ckuewhewheach12 As your Supersaver ticket doesn‘t include any extras, your only option is to get a separate return ticket from ZRH Airport to Zurich HB. This return ticket will be a 24h ticket for the ZVV zones 121 and 110 (see more clarification if googling for „ZVV Zone map“) allowing free travel on any means of public transportation within those zones, back and forth as many times you‘d like. As opposed to your Supersaver ticket, buying such a ticket for a particular connection in the timetable doesn‘t mean you have to use that train: This will just set the start time of that 24h period and make sure all necessary zones are included.
Note that if you intend to have a look down on Zurich from Mt. Uetliberg (which would be doable with 5h time), you‘d need to get Airport - Uetliberg tickets in order to additionally include the necessary zones 154 and 155.