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