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