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