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