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