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