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