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