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