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