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