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