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