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