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