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