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