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