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