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