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