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)(11,13)(12,14)(15,16)(17,18,22,20)(19,25,28,32)(21,29,30,24)(23,31,26,27)(2,5)(3,7)(9,10)(11,15)(12,14)(13,16)(17,19,21,27,22,28,30,31)(18,23,24,25,20,26,29,32)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,18)(19,26)(20,22)(21,24)(23,28)(25,31)(27,32)(29,30)(1,3,4,7)(2,6,5,8)(11,16)(13,15)(17,20,22,18)(19,25,28,32)(21,24,30,29)(23,31,26,27)(10,14)(13,15)(18,20)(23,26)(24,29)(25,32) 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.