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