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