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)(11,14)(12,15)(13,16)(17,18,21,22)(19,23,26,29)(20,24,28,30)(25,31,27,32)(2,5)(6,8)(9,11,13,12)(10,14,16,15)(18,22)(19,23)(20,24)(26,29)(28,30)(31,32)(9,11,13,12)(10,15,16,14)(17,19)(18,23)(20,27)(21,26)(22,29)(24,32)(25,28)(30,31)(9,12,13,11)(10,15,16,14)(17,20)(18,24)(19,25)(21,28)(22,30)(23,31)(26,27)(29,32)(1,3,4,7)(2,6,5,8)(19,26)(23,29)(25,27)(31,32)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.