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