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