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