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