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