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