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