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