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