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