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