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