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