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)(12,16)(13,15)(17,18)(19,24)(20,25)(21,26)(22,23)(27,31)(28,32)(29,30)(33,34,39,41)(35,42,37,40)(36,45,46,38)(43,44,47,48)(2,7)(4,14)(8,10)(12,15)(17,19,23,20)(18,24,22,25)(21,28,30,27)(26,32,29,31)(33,35,39,37)(34,40,41,42)(36,43,46,47)(38,44,45,48)(2,7)(3,11)(5,9)(12,15)(18,22)(19,20)(26,29)(27,28)(36,46)(38,45)(43,47)(44,48) involution — undirected(1,3,6,11)(2,8,7,10)(4,15,14,12)(5,13,9,16)(17,20,23,19)(18,25,22,24)(21,27,30,28)(26,31,29,32)(33,36)(34,38)(35,43)(37,47)(39,46)(40,44)(41,45)(42,48)(1,4)(2,9)(3,12)(5,7)(6,14)(8,13)(10,16)(11,15)(17,21,23,30)(18,26,22,29)(19,27,20,28)(24,31,25,32)(33,37,39,35)(34,40,41,42)(36,43,46,47)(38,48,45,44)(1,5,6,9)(2,4,7,14)(3,13,11,16)(8,15,10,12)(17,22,23,18)(19,25,20,24)(21,29,30,26)(27,32,28,31)(33,38)(34,36)(35,44)(37,48)(39,45)(40,43)(41,46)(42,47)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.