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