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