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