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