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