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