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