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