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