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