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