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)(19,28)(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)(3,10,11,13)(7,14,15,16)(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)(1,3)(2,7)(4,13)(5,10)(6,11)(8,16)(9,15)(12,14)(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.