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