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