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