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