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