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