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