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