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