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