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