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