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