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