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