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