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