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