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