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