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