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