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