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