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