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)(18,22)(19,26)(20,23)(25,30)(27,28)(29,32)(1,3,6,4,7,14,5,13)(2,8,15,16,11,9,10,12)(17,18,23,30,21,25,20,22)(19,24,26,32,28,31,27,29)(17,19)(18,24)(20,27)(21,28)(22,29)(23,26)(25,31)(30,32) involution — undirected(1,4,6,14,7,13,5,3)(2,9,10,16,11,8,15,12)(18,25)(22,30)(24,31)(29,32)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.