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