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