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