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