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