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