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