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