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)(17,18,21,23)(19,25,26,32)(20,28,30,24)(22,29,31,27)(1,3,6,14)(2,7,10,16)(4,13,5,12)(8,11,9,15)(17,19,21,26)(18,22,23,31)(20,29,30,27)(24,32,28,25)(20,30)(24,28)(25,32)(27,29) involution — undirected(18,23)(22,31)(24,28)(25,32) involution — undirected(1,4,6,5)(2,8,10,9)(3,12,14,13)(7,15,16,11)(18,23)(19,26)(24,28)(27,29)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.