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