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