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