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