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