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