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