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