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)(19,23,29,36)(20,24)(21,25)(22,26)(27,34,42,46)(28,35,44,48)(30,37)(31,38)(32,39)(33,40)(41,45,43,47)(1,2,4,6,5,8,12,14)(3,7,11,13,10,15,9,16)(17,19)(18,23,26,36)(20,27)(21,28)(22,29)(24,34,38,46)(25,35,40,48)(30,41)(31,42)(32,43)(33,44)(37,45,39,47)(1,3,5,10)(2,7,8,15)(4,11,12,9)(6,13,14,16)(17,20,22,31)(18,24,26,38)(19,27,29,42)(21,32,33,30)(23,34,36,46)(25,39,40,37)(28,43,44,41)(35,47,48,45)(3,10)(7,15)(9,11)(13,16)(17,21,22,33)(18,25,26,40)(19,28,29,44)(20,30,31,32)(23,35,36,48)(24,37,38,39)(27,41,42,43)(34,45,46,47)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.