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