One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,10,12,7)(4,14,9,6)(11,13,15,16)(17,18,24,28)(19,21,31,32)(20,22,27,23)(25,30,29,26)(1,3,5,12)(2,7,8,10)(4,11,9,15)(6,13,14,16)(17,19,22,26,24,31,23,30)(18,25,20,21,28,29,27,32)(1,4,6,2,5,9,14,8)(3,11,13,7,12,15,16,10)(17,20,23,18,24,27,22,28)(19,29,30,21,31,25,26,32)(2,8)(3,12)(4,9)(13,16)(17,21,22,29,24,32,23,25)(18,26,20,31,28,30,27,19)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.