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