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