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