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