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