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)(11,15)(12,16)(13,14)(17,18)(19,23)(20,24)(21,22)(26,27)(30,31)(1,3)(2,6)(4,5)(7,8)(9,10,13,14)(11,15,16,12)(18,21)(19,20)(25,26,29,27)(28,31,32,30)(3,4)(6,7)(10,14)(12,15)(17,19,22,20)(18,23,21,24)(25,26,29,27)(28,31,32,30)(1,2)(3,7)(4,6)(5,8)(9,11)(10,15)(12,14)(13,16)(17,20,22,19)(18,24,21,23)(25,27,29,26)(28,30,32,31)(1,4,5,3)(2,7,8,6)(9,12,13,15)(10,16,14,11)(17,21,22,18)(19,23,20,24)(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.