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