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