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