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