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