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