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