One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,4)(3,9,11,16)(5,13,15,8)(7,14,10,12)(22,29)(30,31)(33,34)(35,43)(36,39)(37,41)(38,42)(40,46)(44,47)(45,48)(1,3)(2,7)(4,10)(5,14)(6,11)(8,16)(9,13)(12,15)(17,18)(19,22)(20,27)(21,24)(23,28)(25,31)(26,29)(30,32)(34,39)(36,37)(40,47)(41,42)(43,48)(45,46) involution — undirected(1,4,6,2)(3,10,11,7)(5,13,15,8)(9,12,16,14)(17,19,21,26)(18,22,24,29)(20,25,28,32)(23,30,27,31)(33,35)(34,40)(36,46)(37,45)(38,44)(39,47)(41,43)(42,48)(2,4)(3,11)(8,13)(12,14)(17,20,21,28)(18,23,24,27)(19,25,26,32)(22,30,29,31)(35,44)(40,48)(43,47)(45,46)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.