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