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)(11,16)(12,14)(13,15)(17,18,24,30,22,28,23,29)(19,31,34,42,33,25,21,27)(20,35,39,45,38,26,40,44)(32,41,36,43,47,46,37,48)(1,3,5,4)(2,6,7,8)(17,19,24,34,22,33,23,21)(18,25,30,27,28,31,29,42)(20,36,40,32,38,37,39,47)(26,43,45,41,35,48,44,46)(1,4,5,3)(2,6,7,8)(9,11,13,12)(10,14,15,16)(17,20)(18,26)(19,32)(21,37)(22,38)(23,40)(24,39)(25,41)(27,43)(28,35)(29,45)(30,44)(31,46)(33,47)(34,36)(42,48)(2,7)(6,8)(9,12,13,11)(10,14,15,16)(17,21,23,33,22,34,24,19)(18,27,29,25,28,42,30,31)(20,37,40,47,38,36,39,32)(26,43,45,41,35,48,44,46)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.