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