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