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