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