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