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