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