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