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