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