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