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