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