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