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