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)(17,18,20,22)(19,23,24,21)(25,26,29,30)(27,28,31,32)(1,3,5,4)(2,6,7,8)(9,11,13,16)(10,14,12,15)(19,24)(21,23)(25,27,29,31)(26,28,30,32)(2,7)(6,8)(9,10,13,12)(11,15,16,14)(17,18)(19,21)(20,22)(23,24)(25,28)(26,27)(29,32)(30,31)(1,4,5,3)(2,8,7,6)(9,12,13,10)(11,14,16,15)(17,19,20,24)(18,21,22,23)(25,27)(26,28)(29,31)(30,32)(1,2)(3,8)(4,6)(5,7)(9,11)(10,14)(12,15)(13,16)(17,18)(19,21)(20,22)(23,24)(25,26)(27,28)(29,30)(31,32) 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.