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