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