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