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