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