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