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