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