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