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