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