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