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