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