One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,10,6,11,5,15)(3,12,13,9,4,8,14,16)(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)(1,3,6,4)(2,8,11,12)(5,14,7,13)(9,10,16,15)(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)(1,4,6,3)(2,9,11,16)(5,14,7,13)(8,10,12,15)(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)(1,5,6,7)(2,10,11,15)(3,13,4,14)(8,9,12,16)(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.