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