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