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