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