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