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