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