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)(17,18,22,25)(19,21,24,30)(20,23,29,32)(26,28,27,31)(1,3,6,5)(2,7,4,8)(10,15)(11,16)(19,24)(21,30)(26,27)(28,31)(1,3,6,5)(2,8,4,7)(9,11,14,16)(10,12,15,13)(17,19,22,24)(18,21,25,30)(20,27,29,26)(23,31,32,28)(9,12,14,13)(10,11,15,16)(17,20)(18,23)(19,26)(21,28)(22,29)(24,27)(25,32)(30,31)(1,4,6,2)(3,7,5,8)(9,10)(11,12)(13,16)(14,15)(17,20)(18,23)(19,26)(21,28)(22,29)(24,27)(25,32)(30,31)(1,5,6,3)(2,7,4,8)(9,13,14,12)(10,16,15,11)(17,21)(18,24)(19,25)(20,28)(22,30)(23,27)(26,32)(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.