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