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