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