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