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