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