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