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