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