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