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