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