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