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)(17,18,22,20)(19,24,26,23)(21,28,29,25)(27,30,32,31)(1,3,5,8)(2,6,4,7)(9,10,13,12)(11,14,15,16)(17,19)(18,23)(20,24)(21,27)(22,26)(25,30)(28,31)(29,32)(9,11)(10,14)(12,16)(13,15)(18,20)(19,26)(25,28)(27,32) involution — undirected(9,12,13,10)(11,14,15,16)(17,19)(18,24)(20,23)(21,27)(22,26)(25,31)(28,30)(29,32)(17,20,22,18)(19,23,26,24)(21,28,29,25)(27,30,32,31)(1,4,5,2)(3,7,8,6)(17,21,22,29)(18,25,20,28)(19,27,26,32)(23,30,24,31)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.