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