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