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