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