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