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