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