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