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