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