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