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