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