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