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