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