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