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