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