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