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