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