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