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