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