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