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