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