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