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