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