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