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