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