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