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