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