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