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