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