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