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