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