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