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