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