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