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