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