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