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