One vertex per element, one color per generator, with an edge from x to x·s.
(2,6)(4,12)(7,13)(8,15)(9,16)(10,14)(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)(1,2,5,7)(3,9,11,15)(4,13,12,6)(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)(2,7)(6,13)(8,16)(9,15)(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)(1,3,5,11)(2,8,7,16)(4,14,12,10)(6,15,13,9)(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.