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