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