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