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