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