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