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