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