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