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