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