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