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