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