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