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