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