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