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