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