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