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