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