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