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