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