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