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