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