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