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