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