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