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