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)(33,34,38,42)(35,39,44,53)(36,46,48,63)(37,50,51,41)(40,55,57,49)(43,58,47,62)(45,61,60,54)(52,64,56,59)(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)(33,35,38,44)(34,39,42,53)(36,47,48,43)(37,45,51,60)(40,56,57,52)(41,54,50,61)(46,62,63,58)(49,64,55,59)(1,4,7,3)(2,8,10,11)(5,12,6,13)(9,16,14,15)(18,23)(19,26)(24,28)(27,32)(33,36,37,49,38,48,51,55)(34,40,41,46,42,57,50,63)(35,43,45,59,44,47,60,64)(39,52,54,58,53,56,61,62)(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)(35,44)(36,48)(39,53)(40,57)(45,60)(46,63)(49,55)(54,61)(1,6,7,5)(2,9,10,14)(3,12,4,13)(8,16,11,15)(35,44)(39,53)(43,47)(45,60)(52,56)(54,61)(58,62)(59,64)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.