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