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