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