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