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