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