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