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)(17,18,24,28,23,30,22,29)(19,25,38,41,34,43,33,42)(20,27,35,26,21,37,36,45)(31,40,47,39,32,46,48,44)(1,2,5,6)(3,7,4,8)(9,10)(11,15)(12,14)(13,16)(17,19,23,34)(18,25,30,43)(20,32,21,31)(22,33,24,38)(26,44,45,39)(27,46,37,40)(28,41,29,42)(35,48,36,47)(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,20)(18,26)(19,31)(21,23)(22,35)(24,36)(25,39)(27,28)(29,37)(30,45)(32,34)(33,47)(38,48)(40,41)(42,46)(43,44)(2,6)(7,8)(11,16)(13,15)(17,21,23,20)(18,27,30,37)(19,32,34,31)(22,35,24,36)(25,40,43,46)(26,29,45,28)(33,47,38,48)(39,42,44,41)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,22,23,24)(18,28,30,29)(19,33,34,38)(20,35,21,36)(25,41,43,42)(26,27,45,37)(31,47,32,48)(39,40,44,46)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.