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