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