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