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