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