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