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