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