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