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