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