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