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