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