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