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