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