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