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