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