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