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