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