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