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)(17,18,22,24)(19,23,28,25)(20,26,31,30)(21,29,32,27)(3,7)(5,8)(10,11)(14,15)(17,19)(18,23)(20,29)(21,30)(22,28)(24,25)(26,32)(27,31) involution — undirected(1,2)(3,5)(4,6)(7,8)(9,11,13,10)(12,15,16,14)(18,24)(19,28)(20,31)(21,32)(9,12,13,16)(10,14,11,15)(17,19)(18,25)(20,27)(21,30)(22,28)(23,24)(26,32)(29,31)(1,3)(2,5)(4,7)(6,8)(17,20)(18,26)(19,29)(21,25)(22,31)(23,32)(24,30)(27,28) involution — undirected(1,2)(3,5)(4,6)(7,8)(17,21)(18,27)(19,30)(20,25)(22,32)(23,31)(24,29)(26,28) 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.