One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10)(11,14)(12,13)(15,16)(17,18,21,27,22,28,23,24)(19,29,33,37,32,25,30,40)(20,26,35,42,36,41,34,38)(31,43,46,47,45,39,44,48)(2,5)(6,8)(18,24)(19,30)(20,34)(21,23)(25,29)(26,41)(27,28)(31,45)(32,33)(35,36)(39,48)(43,47) involution — undirected(1,3,4,7)(2,6,5,8)(10,13)(14,16)(17,19,21,33,22,32,23,30)(18,25,27,40,28,29,24,37)(20,31,35,46,36,45,34,44)(26,39,42,48,41,43,38,47)(17,20,23,34,22,36,21,35)(18,26,24,38,28,41,27,42)(19,31,30,44,32,45,33,46)(25,39,37,47,29,43,40,48)(9,11,12,15)(10,14,13,16)(19,32)(25,29)(30,33)(31,45)(37,40)(39,43)(44,46)(47,48)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.