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