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