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)(11,13)(12,14)(15,16)(17,18,23,25,22,28,21,27)(19,24,35,37,30,39,31,40)(20,32,36,42,33,26,34,41)(29,43,46,48,45,38,44,47)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,24)(20,29)(21,31)(22,30)(23,35)(25,37)(26,38)(27,40)(28,39)(32,43)(33,45)(34,44)(36,46)(41,47)(42,48) involution — undirected(1,4,5,2)(3,7,8,6)(9,11)(10,13)(12,16)(14,15)(18,25)(21,23)(24,37)(26,41)(27,28)(31,35)(32,42)(34,36)(38,47)(39,40)(43,48)(44,46)(3,8)(6,7)(11,16)(13,15)(17,20,22,33)(18,26,28,32)(19,29,30,45)(21,34,23,36)(24,38,39,43)(25,41,27,42)(31,44,35,46)(37,47,40,48)(10,14)(13,15)(19,30)(20,33)(24,39)(26,32)(31,35)(34,36)(37,40)(41,42) involution — undirectedA 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.