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