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