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