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