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)(17,18,21,26,22,24,20,25)(19,27,29,23,30,32,28,31)(1,3,9,2,6,11,5,8)(4,10,13,7,14,16,15,12)(17,19)(18,23)(20,29)(21,28)(22,30)(24,31)(25,32)(26,27)(1,4)(2,7)(3,10)(5,15)(6,14)(8,12)(9,13)(11,16)(17,19)(18,23)(20,28)(21,29)(22,30)(24,31)(25,27)(26,32) involution — undirected(18,24)(23,31)(25,26)(27,32) 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.