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