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