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