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