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