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