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