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