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