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