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