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