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