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