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