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