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