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