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