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)(17,18,22,27,23,28,21,26)(19,24,20,30,29,32,31,25)(1,2,5,6)(3,7,4,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,22)(21,31)(23,29)(25,26)(27,30)(28,32)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,20)(18,24)(19,22)(21,29)(23,31)(25,27)(26,30)(28,32)(2,6)(7,8)(11,16)(13,15)(17,20)(18,25)(19,21)(22,29)(23,31)(24,27)(26,32)(28,30) involution — undirected(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,21,23,22)(18,26,28,27)(19,20,29,31)(24,30,32,25)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.