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