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