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