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