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