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