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