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