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