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