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