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