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