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