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