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