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