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