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