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