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