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