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