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