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