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