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