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