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