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