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