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)(17,18,21,27,24,29,23,39)(19,30,32,45,34,46,37,41)(20,28,22,38,36,44,35,26)(25,33,40,31,43,47,42,48)(1,3)(2,7,10,16)(4,12)(5,13)(6,14)(8,15,9,11)(17,19,22,33,21,37,36,48,24,34,35,47,23,32,20,31)(18,25,28,41,39,40,26,30,29,43,44,45,27,42,38,46)(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.