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