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