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