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