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