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