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