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