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