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