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