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