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