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