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