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