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