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