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