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