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)(25,29)(26,32)(30,31)(33,34,40,38)(35,45,47,41)(36,43,37,42)(39,44,46,48)(1,2)(3,7)(4,8)(5,6)(9,13)(10,15)(11,16)(12,14)(17,18,22,21)(19,24,27,23)(20,25,28,29)(26,31,32,30)(33,35)(34,41)(36,46)(37,39)(38,45)(40,47)(42,48)(43,44)(17,19)(18,23)(20,26)(21,24)(22,27)(25,30)(28,32)(29,31)(33,36,40,37)(34,42,38,43)(35,46,47,39)(41,48,45,44)(1,3,5,9)(2,7,6,13)(4,11,12,10)(8,16,14,15)(17,19)(18,24)(20,26)(21,23)(22,27)(25,31)(28,32)(29,30)(33,37,40,36)(34,43,38,42)(35,46,47,39)(41,48,45,44)(1,2)(3,7)(4,8)(5,6)(9,13)(10,15)(11,16)(12,14)(17,20,22,28)(18,25,21,29)(19,26,27,32)(23,30,24,31)(33,38,40,34)(35,45,47,41)(36,43,37,42)(39,48,46,44)(1,4,5,12)(2,8,6,14)(3,10,9,11)(7,15,13,16)(17,21,22,18)(19,24,27,23)(20,29,28,25)(26,31,32,30)(33,39,40,46)(34,44,38,48)(35,37,47,36)(41,43,45,42)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.