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