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