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