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