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