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