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