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