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