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