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