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)(11,14)(12,13)(15,16)(17,18,22,19)(20,25,27,23)(21,26,29,24)(28,30,32,31)(35,39)(36,43)(42,47)(44,48)(9,11)(10,14)(12,15)(13,16)(18,19)(20,27)(24,26)(28,32)(33,34,38,41)(35,36,39,43)(37,45,46,40)(42,48,47,44)(9,11,13,16)(10,15,12,14)(17,19,22,18)(20,23,27,25)(21,24,29,26)(28,31,32,30)(33,35)(34,36)(37,42)(38,39)(40,44)(41,43)(45,48)(46,47)(1,2)(3,5)(4,6)(7,8)(9,11)(10,15)(12,14)(13,16)(17,20,22,27)(18,23,19,25)(21,28,29,32)(24,30,26,31)(33,36)(34,39)(35,41)(37,44)(38,43)(40,47)(42,45)(46,48)(1,3,4,7)(2,5,6,8)(9,12,13,10)(11,14,16,15)(17,21,22,29)(18,24,19,26)(20,28,27,32)(23,30,25,31)(33,37,38,46)(34,40,41,45)(35,42,39,47)(36,44,43,48)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.