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