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