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