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