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