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