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