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