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