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