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