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