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