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