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