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