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