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