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