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