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