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