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