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