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