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