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