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