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