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