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