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