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