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