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