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