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