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