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