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