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