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