One vertex per element, one color per generator, with an edge from x to x·s.
(3,7)(5,8)(9,10,13,11)(12,15,16,14)(19,26)(23,25)(27,32)(30,31)(1,2,4,6)(3,5,7,8)(10,11)(14,15)(17,18,22,21)(19,25,26,23)(20,28,29,24)(27,30,32,31)(1,3)(2,5)(4,7)(6,8)(9,11,13,10)(12,15,16,14)(17,19)(18,23)(20,27)(21,25)(22,26)(24,30)(28,31)(29,32)(1,2)(3,5)(4,6)(7,8)(9,12,13,16)(10,14,11,15)(17,20,22,29)(18,24,21,28)(19,27,26,32)(23,30,25,31)(1,3)(2,5)(4,7)(6,8)(17,19)(18,25)(20,27)(21,23)(22,26)(24,31)(28,30)(29,32) involution — undirected(17,21,22,18)(19,25,26,23)(20,24,29,28)(27,30,32,31)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.