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