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