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