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