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