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