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