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