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