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