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