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