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