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