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