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