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