One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,7)(3,9,11,4)(5,13,14,8)(10,12,16,15)(19,25)(23,26)(27,31)(30,32)(36,47)(41,50)(44,57)(48,60)(52,55)(54,61)(58,64)(62,63)(2,7)(4,9)(8,13)(12,15)(17,18,22,20)(19,23,25,26)(21,28,29,24)(27,32,31,30)(34,39)(36,47)(37,49)(40,43)(44,57)(45,59)(54,61)(62,63)(1,2)(3,4)(5,8)(6,7)(9,11)(10,12)(13,14)(15,16)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,34,38,39)(35,43,46,40)(36,41,47,50)(37,42,49,51)(44,55,57,52)(45,56,59,53)(48,54,60,61)(58,63,64,62)(1,3)(2,4)(5,10)(6,11)(7,9)(8,12)(13,15)(14,16)(17,20,22,18)(19,26,25,23)(21,28,29,24)(27,32,31,30)(33,35,38,46)(34,40,39,43)(36,44,47,57)(37,45,49,59)(41,52,50,55)(42,53,51,56)(48,58,60,64)(54,62,61,63)(1,4)(2,3)(5,12)(6,9)(7,11)(8,10)(13,16)(14,15)(17,21,22,29)(18,24,20,28)(19,27,25,31)(23,30,26,32)(33,36)(34,41)(35,44)(37,48)(38,47)(39,50)(40,52)(42,54)(43,55)(45,58)(46,57)(49,60)(51,61)(53,62)(56,63)(59,64)(1,5,6,14)(2,8,7,13)(3,10,11,16)(4,12,9,15)(17,19)(18,23)(20,26)(21,27)(22,25)(24,30)(28,32)(29,31)(33,37)(34,42)(35,45)(36,48)(38,49)(39,51)(40,53)(41,54)(43,56)(44,58)(46,59)(47,60)(50,61)(52,62)(55,63)(57,64)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.