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