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