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