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