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