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