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