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