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