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