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