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