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