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