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