One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,8,13)(3,14,18,29)(4,10,20,5)(6,12,7,11)(9,24,28,17)(15,16,30,32)(19,22,23,25)(21,31,26,27)(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)(1,3,8,18)(2,9,13,28)(4,15,20,30)(5,21,10,26)(6,17,7,24)(11,14,12,29)(16,25,32,22)(19,27,23,31)(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)(1,4)(2,10)(3,15)(5,13)(6,23)(7,19)(8,20)(9,26)(11,22)(12,25)(14,16)(17,31)(18,30)(21,28)(24,27)(29,32)(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) involution — undirected(1,5,8,10)(2,4,13,20)(3,16,18,32)(6,22,7,25)(9,27,28,31)(11,19,12,23)(14,30,29,15)(17,26,24,21)(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)(4,19,20,23)(5,22,10,25)(9,14,28,29)(15,27,30,31)(16,26,32,21)(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.