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)(11,13)(12,14)(15,16)(17,18,21,24)(19,25,26,32)(20,28,30,23)(22,29,31,27)(1,3,5,8)(2,6,4,7)(9,11,13,10)(12,14,16,15)(10,11)(12,16)(17,19,21,26)(18,22,24,31)(20,29,30,27)(23,32,28,25)(1,4,5,2)(3,6,8,7)(9,12,13,16)(10,14,11,15)(19,26)(22,31)(25,32)(27,29)(10,11)(14,15) 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.