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