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