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