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