One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10,14,16,12,11,13,15)(17,18,22,31,20,25,21,26)(19,27,30,24,28,23,29,32)(2,5)(6,8)(9,11,13,16,12,10,14,15)(17,19)(18,23)(20,28)(21,29)(22,30)(24,26)(25,27)(31,32)(3,7)(6,8)(9,11,12,10)(13,15,14,16)(17,19)(18,24)(20,28)(21,30)(22,29)(23,26)(25,32)(27,31)(1,3,4,7)(2,6,5,8)(10,11)(15,16)(19,28)(23,27)(24,32)(29,30)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.