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