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