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)(17,18,21,24)(19,22,27,25)(20,28,29,23)(26,31,32,30)(33,34,39,43)(35,38,45,40)(36,46,44,41)(37,47,48,42)(1,3)(2,7)(4,5)(6,11)(8,14)(9,16)(10,12)(13,15)(17,18,21,24)(19,22,27,25)(20,28,29,23)(26,31,32,30)(33,35,39,45)(34,40,43,38)(36,37,44,48)(41,47,46,42)(3,11)(4,13)(7,12)(8,16)(17,18)(19,25)(20,23)(21,24)(22,27)(26,31)(28,29)(30,32)(33,36,39,44)(34,41,43,46)(35,37,45,48)(38,42,40,47)(1,4,6,13)(2,8,10,16)(3,5,11,15)(7,14,12,9)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,31)(29,32)(33,37,39,48)(34,42,43,47)(35,44,45,36)(38,46,40,41)(1,5)(2,9)(3,4)(6,15)(7,16)(8,12)(10,14)(11,13)(17,18)(19,25)(20,23)(21,24)(22,27)(26,31)(28,29)(30,32)(33,35)(34,40)(36,37)(38,43)(39,45)(41,47)(42,46)(44,48) involution — undirected(1,2)(3,12)(4,8)(5,9)(6,10)(7,11)(13,16)(14,15)(17,20,21,29)(18,23,24,28)(19,26,27,32)(22,30,25,31)(33,38,39,40)(34,35,43,45)(36,42,44,47)(37,46,48,41)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.