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