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