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