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