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