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