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