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)(11,16)(12,14)(13,15)(17,18,21,23)(19,20,24,22)(26,30)(28,31)(1,3,5,8)(2,4,6,7)(9,11)(10,12)(13,14)(15,16)(17,19,21,24)(18,22,23,20)(25,26,29,30)(27,31,32,28)(2,6)(3,8)(9,12,13,16)(10,14,15,11)(17,20,21,22)(18,19,23,24)(25,27,29,32)(26,28,30,31)(1,4)(2,3)(5,7)(6,8)(9,11)(10,12)(13,14)(15,16)(17,18)(19,20)(21,23)(22,24) involution — undirected(1,2)(3,4)(5,6)(7,8)(9,12)(10,11)(13,16)(14,15)(17,20)(18,19)(21,22)(23,24)(25,28)(26,27)(29,31)(30,32) 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.