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