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