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