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