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