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