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