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