How Can I get to the Ngong Ping cable car terminal from HK Airport?

Oh, you cannot take the cable car until Dec.5 because it's under renovation. So you can take bus no. E32 to get to Yu Tung Court. Then transfer to bus no.23 to get to the destination. It takes around 80 mins with the fare of 28 HKD per person.
If you go there after Dec.5, you can take bus no.E21 to Fu Tung Shopping Centre, Tat Tung Road. It takes around 20 mins with the ticket fare of 4 HKD per person. Then walk to Lower Cable Terminus and take it the destination.