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