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