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