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